Difference Between DNS Server And External IP Address?
Oct 11, 2011
Whats the difference between DNS Server and External IP Address? When I dump Ipconfig /all into a .txt file I see that it shows three seperate values for the DNS Server. My question is, since ipconfig /all does not give an external IP address, are they the same? Why are theyre three?
We once had a virtual server with two network adapters, one was internal and the other was external, and people could access it directly from the internet.
That server recently, died (someone put the .VHD file on a massive RAID 0 array, and that went boom), and I need to set it back up again. All the DNS entries appear to still be there, but how to assign the external IP to the network adapter. I tried Google, but my Google-fu must be weak today as I can't find anything useful.
It's a Server 2008 R2 machine running inside Hyper-V. Nothing's changed except for the new Windows install, it's running with the exact same VM settings, which I didn't touch except to add a new VHD.
I am desperate to make some kind of translation which convert an outside IP Address of our web server to its inside ip address so that requests can be routed internally to the server.
This is what we have: A wireless network with an SSID to serve visitors. We also have an in-house web server which can be accessed internally and externally. We have a ASA 5520 that protects the internal network, including the Web server, and also routes all traffic from the all visitors connected to the public SSID to the outside. The DHCP server for the wireless network for visitors is configured to give the 8.8.8.8 as dns server. The problem with that is that the www.ourwebserver.com is resolved by Google's dns server to the public IP Address of our web server! The traffic then is sent to the outside interface of the ASA 5520. The visitor who wants to access our web server cannot connect!
How can I configure the ASA to route that traffic to our web server with the public ip address to the inside ip address of the web server?
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
My IP adress has always been external. About 2 years ago, after reinstalling my windows,(I am using and used before reinstalling windows7) my IP adress started to work as it wouldn't be external. I couldn't host servers and stuff like that anymore.I tried turning off firewall, few other tricks but nothing changed.When I look information about my IP adress ,most of the sites see it as external.Also, when I call my interned providers, they tell me that they see my adress as external.
Some details :
-Internet is provided by a cable (not using telephone, TV or something else from those internet dealers)
-I am alone using this internet, no one else is connected to it.
I use an online software host. They put print jobs into a queue and send them directly to my printer. I just got a new printer. The software host needs it's "External IP address" I have my internal IP address. I pinged the printer and got my internal IP address instead of the printer's. I am on a home wired network running through a modem and router.
I Connected two connection on my computer. One is LAN connection that is my Office network connection, and another one is USB Wireless device. I was using those two connection on the same computer. Now i office Network admin came and changed the Setting from the LAN Propertied. he removed the default gateway of my server IP address from DNS Server and he gave that ip address to the Default gateway in the LAN Propertied tab. After which i cannot access the wireless. If i change to ip address to the DNS Server my wireless is working..what is DNS Server and Default gateway..... Also i want to know the diffrence between that..
I have a client that has 2 servers behind the same router. They have an IP block from Time Warner -> (x.x.x.18-.30) The router has the IP address of x.x.x.18. Server A (192.168.1.6) is setup with the forwarding of ports 22, 23, and 115 and can be seen with the ip address x.x.x.18. An external company needs to access the other server and is requesting an external IP for Server B (192.168.1.5) which need the same ports open along with 6200.What is the best way to set this up with what they have? The router is a Linksys WRT54G. Is there a way to set them up with a x.x.x.19 address from time warner? Is this something time warner will need to do?
I have a home desktop, home laptop, and work laptop that I use. I have Ultra VNC setup on my work laptop that allows me to remote into that machine when I am traveling for work. I have always been able to use the external IP address (not private) to login into the machine with no problem. This week, for some reason, I can no longer do that. When I started doing some discovery, I noticed that when I have all 3 machines booted up at home that the exact same external IP address is assigned to all 3 machines. The internal IP addresses are all different as they should be.Shouldn't each machine have a seperate external IP address assigned as well? Or is this working the way it should? I didn't change any setting on my router or DSL model. But I think the conflict that VNC is having on my work laptop is that it has the exact same IP as the destination computer and it fails. I can remote in if I use the private IP address (192.168.x.x) just fine.
I am trying to bridge my wireless signal from the cable modem/router located upstairs to my TV, Onkyo surround receiver, DVD , & DirecTV DVR which are all located near each other downstairs.I have a wireless print server setup near the downstairs electronics with ethernet cables running from the print server to each component
I wonder what the difference is between the virtual server and the port forwarding because the router I was using previously had only port forwarding. When should I use virtual server instead of port forwarding?
We have a strange issue for one of our customers that recently migrated to our internet service.They are trying to vpn to an external ip address not controlled by ourselves. The issue is only on one subnet and isolated to Mac’s, PCs in the same subnet also work fine. They were able to vpn from the MACs before they migrated to our INET solution. They previously used a checkpoint FW for their outside NAT and firewall and now are using a failover pair of asa 5510s. I have packet traced out the firewall and there should be nothing blocked. UDP ports 500 and 4500 are open to the destination ips from the correct subnets. All other subnets with Windows PCs can vpn out to external ip without issue. The users in that subnet with the MACs can also browse internet fine so the routing and nat overloading is also ok
When they try to initiate a connection from the macs i can see the connection/xlate coming in from a source port of udp 4500/500 and also a destination of udp 4500/500 instead of a random source port. Just this evening we managed to get one device connected but no others. Would the fact that the source port is claiming 500 and 4500 stop the other macs using the same source ports at the same time to connect out? They are using the onboard mac vpn client, he can’t get the Cisco one working at the minute. [code]
We have a Router with one External IP and a couple of VLANs. We have got a Teleconferencing Unit that needs almost every port known to man to work, so decided to get the unit its own External IP.
We have the IP now and how to get it in the router and then also to use it only for the Video unit (From outside straight through to Video).
Im comfortable adding lines to the router but just don't know what the lines should be.
The new IP's purchased are 116.199.222.200/30 (Only need to use one address, lets say 116.199.222.200). No idea what the subnet mask should be...
The router config below stripped of irrelevant stuff:
interface FastEthernet0 no ip address ! interface FastEthernet1
Our company uses a commercial copier monitoring package called FMAudit to obtain meter readings from our clients' copiers, and it uses a feed to send the readings back to us. We have used port 90 for this purpose.Due to a recent server crash and emergency reconfiguration of our network, we have moved our FMAudit central server from in-house to a hosted service, with of course a different external IP address.
Without interfering with our other systems, is there a way to redirect JUST PORT 90 to another IP address external to our own? I don't care if it has to happen at the router or server level. We are using Server 2003 and a Cisco 887VAW.
The problem is that the PABX is sending out an internal address in it's INVITE messages and the ASA5505 isn't changing the internal address to the external address.We need> From: Calling Number <SIP: SIP Username@Public IP Address>However our PABX sends out> From: Calling Number <SIP: SIP Username@Private IP Address>. How to translate the internal IP address to the external IP address on an ASA 5505?
I have a EA3500 wireless router with the new style (smartwifi) firmware. I've scoured the web admin interface and can't find any sort of 'status' page that would tell me the external IP. I've looked through the support docs but they only show how to find internal/local IP.
Alright so I have an SSH server running on my network. I can successfully connect to it from a local computer using the server's internal IP address, AND I can connect to it from a remote computer using the server's external IP address (it's properly port forwarded).
However, when I try to connect to the server from a local computer using it's external IP address, I get a connection refused error. Is there something I'm missing?
I have a mail server, with external access which works fine for external access thorugh our router (a 1941). I have a laptop which connects to a wireless network that is inside our router. When attempting to navigate to the webmail or use outlook, it cannot connect.
The laptop is configured to access the mail through the external path as it would be offsite occasionally.
I think the problem seems to be that the traffic is not leaving the router to come back internally. The laptop can ping the external address ok.
I read about something called hairpinning - is this what i need to be looking at?
I have a WAG160Nv2 and I want to block specific external ip addresses from trying to get at our server that uses the WAG160Nv2 as an internet gateway. It's not immediately obvious if this can be done from looking through the config pages.
We have an ASA 5505 and are changing ISPs so we'll be getting a new static IP address. How do I change the external IP address using ASDM? (I haven't done it in 5 years so I'm rusty and just want ot make sure.) The ASA and ASDM are up to date.Am i correct in that I only need to change the external address in the configuration under Interfaces, then under Routing - Static Routes - Gateway IP I just need to enter the new WAN gateway address?
I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.
We have a new Cisco ASA 5550 that I am trying to configure. We are currently using a borderware firewall.
We have multiple external IP addresses and I can NAT traffic from all except for our external interface IP address.
When watching the packets in the ADSM monitor if the IP address is our external IP then I see nothing unless it is ICMP. I can ping the IP address just cannot do anything else with it.
All the rest of our provided IP addresses can be NATed and work correctly.
Traffic for our external interface IP does show up when we use the borderware firewall so we know the traffic is getting here.
get my localhost/ server to be visible to everybody via my external IP.
Things you may need to know:
-I'm running WAMP server, and Apache is installed and running.
-I have no firewall.
-I've forwarded port 80 (HTTP) in my modem and my router configurations. (Netgear WGR614v8 Router & Embarq EQ-660R 660 Series modem)
-I've tried several DNS Hosts, none of them have worked.
-I'm not too sure about the configurations of the WAMP server, though.. here's the file (nothing is edited)
Code: # # This is the main Apache HTTP server configuration file. It contains the # configuration directives that give the server its instructions. # See <URL: for detailed information.
I'm running a Windows Home Server in my LAN and I would like to use it's functionalities (especially the streaming) features from "anywhere" using the same URL.My router is a Linksys WRT160Nv3 running.I've already setup the necessary port forwardings, as most of the WHS sites run on ports 80 (http) and/or 443 (https) and my isp is blocking all ports < 1024 (I know it suck, but nothing to do about)
i have just bought an external hard disk which i want to use as an ftp server. my internet connection setup at home is like so. I have a standard wireless router that my isp provides, and a wireless router(TPLink tl-wr1043nd). When i first connected the HDD to my tplink router, i had successfully made an ftp server, but just for local access. Now i cannot get how i can make my ftp server externally(access it from outside my LAN).
I have a couple of ASA 5505's which work fine for what they are doing VPN and all that - we have 1 DLINK DFR-700 Firewall left and I need to get a new ASA to replace this since it is old.
All this box really does is port forward external clients to 1 address on the internal lan for client software updates. Any example configs?
So lets say we have client a with IP 1.1.1.1 and client b has 2.2.2.2 - at the moment this is what happens client a and b come in through http and get mapped to the internal http server 10.10.1.2
So I need to setup about 100 clients which can come in through http only - get mapped to the internal IP and also keeping the internal server to be able to access anything outside.
We have a business case where we have a group of ASA 5505's in 3 locations with anyconnect user licensing on all 3 for redundancy.The problem we are facing is that when we need to authenticate our anyconnect clients we use active directory servers located at site 1 and the other 2 sites need to contact these MS AD Servers over an already connected VPN tunnel to site 1 (IPSec l2l) but cannot.So the layout is as follows:Site 1 (houses AD servers) has l2l tunnels to site 2 and 3Site 2 (any connect essentials enabled) has l2l tunnel to site 1 and 3Site 3 (any connect essentials enabled) has l2l tunnel to site 2 and 3AD servers are ip'd as 10.1.1.11 and 10.1.1.4If I use anyconnect to site 1 it authenticates fine - as expected.Site 2 and site 3 fails to contact AD serverAny thoughts on how we can accomplish this(or is it even possible to do?) without exposing the AD server in a DMZ or via external ip?
configuration commit auto-save filename ftp://10.10.10.3/ASR9K/asr_conf But auto backup not happening .following errror showing after every COMMIT command.
( Error:Couldn't save file /ftp://10.10.10.3/ASR9k/asr_conf. Error:'CfgMgr' detected the 'warning' condition 'Operation is temporarily suspended.' )
Manually I able to take Running-configuration backup through ftp int same lacation (ftp://10.10.10.3/ASR9K/asr_conf ) .But automatically not happening .
I would like to know whether LMS 4.1 (local server mode) has the ability to relay syslog messages received from devices to an external syslog server? If so, how do I configure such?
From reading the document and going through the LMS 4.1 GUI, it appears that it could receive and forward messages but only between LMS system (ie. multi server mode) as SSL is required.